marshall



2 SheetsSheet 1.

No Model.)

B. MARSHALL. ORIMPING MACHINE.

Patented July 2, 1889.v

2 Sheets-Sheet 2.

(No Model.)

EMARSHALL.

GRIMPING MACHINE.

No. 406,176. Patented July .2, 1889.

UNITED STATES PATENT OFFICE.

ROBERT MARSHALL, OF HAMILTON, ONTARIO, CANADA.

CRlMPlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 406,175, dated July :2, 1889.

Application filed October 26, 1888. Serial No. 289,223. (No model.)

molds provided with springs of the same shape slide horizontally on the top of a dou-; ble mold which is secured rigid to the frame These sliding molds are operated upon by the mechanism of the machine until the center of each mold arrives at; the center of the double mold, and remains of the machine.

there while a trix, hereinafter described, performs a full stroke, carrying a piece of leather (that was placed between the spring and sliding mold) through the molds, and while pass-, ing through it engages with a matrix, which; forms and crimps the leather into a seamless.

upper.

The objects of my improvements are, first, to provide a machine having its important parts working automatically, so as to insure speed in crimping; second, to afford facilities for the placing of the leather while the machine is engaged with and crimping another;

third, to provide an automatic device to release the crimp from the trix when at the end of its stroke. I attain these objects by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a side elevation of an entire machine with its bevel wheels in section, the

drive-pulley denoted by its rim-circle line, the matrix bolted to its rod with broken lines, and the trix, which is the same in shape to the press-plates and between them, is hid from view. Fig. 2 is a front sectional elevation through the broken line as x and at right angles with the same, the upper part of front legs and the hind part of bed-plate and machine broken away.

Similar letters refer to similar parts throughout the several views.

In the drawings, the metal frame a, its legs or standards a and a front legs brace (0 bed-plate a, hind supporting-bracket a large spur-wheel shaft-bearing a, and the large bevel-wheel shaft-bearing a7, with its upper part a, constitute the metal fram e-work of the machine.

B B are the drive-pulleys (fast and loose) of the entire machine. The bracket B,- which supports the same, (and shown broken in Fig. 2,) is bolted on a convenient place to the frame a of the machine.

B is a beltshifter attached to a foot-lever B by means of lever B, with fulcrum B When crimping leather with the machine, a Hat piece of leather (oval in shape) is placed on the center of the double sliding mold a and under the springs 0, both of which are attached together and slide horizontally to and fro attached to a slide in the rigid V- groove 0 and also on the rigid bar 0 on the opposite side of molds. The distance be- "tween the double sliding molds and also the double rigid mold is just sufficient to allow the trix with leather to pass through. These sliding molds are operated and moved horizontally by means of the levers D, connected to the said molds and to the double screwshaft by means of nuts D which traverse the said shaft, each nut having a connectingrod D connected to long levers D, with their fulcrums on the front legs A. A rigid guide d is bolted to the said legs A near their top, to facilitate the steady and easy reciprocating motion of the said molds. The trix E, which consists of an angular former corresponding in shape with the matrix, and which is bolted to the lower end of its rod E, is brought down upon the leather by means of a stud E in bevel-wheel E thus forming a crank working into the longitudinal slotted bar E This mechanism gives the trix its motion up and down. At the time the trix is coming down the double pressplates J also come down in the guides J their rods J having studs J which lie in a cam race J formed on the back of the bevel-wheel E which is revolved by the miter-gear S meshing with teeth on the back of bevel-wheel E Thus the trix and press-plates are reciprocated together, though by different motions, the said cam allowing the press-plates to fall lightly on the springs c, and when the trix is passing through the molds it draws the said leather from undern eath the springs and engages with the matrix I in close proximity to the corrugated metal plates i'I. Each plate is backed by a thickness of rubber for the purpose of allowing for the varying thicknesses of leather coming down with the trix and pressing with the said plates close to the leather, giving the same an even surface. Before the trix is through the rigid molds F the rubber rollers R engage with the leather crimp, one on each side of the crimp, just before leaving the mold F, and are for the purpose of smoothing and finishing the same. The matrix I, the upper part of which is shaped the same as the lower part of the trix, forms and shapes the crimp against the trix. to the same, (shown by broken lines in Fig. 1,) is reciprocated in the grooved guides I I by means of the crank K on the lower end of bevel-wheel shaft in bearing a transmitting motion to the large spur-wheel shaft in bearin g a. The pin of said crank is attached to the said spur-wheel and also between thewheel an d pin end of crankb The pin works in thelongitudinal guide-bars L, the lower bar of which forms the upper cross-bar for the matrix-rod I. At the ends of these bars L, and perpendieir lar with them is a belt which passes through both bars, with a coil-spring S around each and resting on the upper longitudinal bar L, which forms thelower cross-bar for the upper end of matrix-rod I. These sprin give and allow tension to the matrix when engaged. The upper end of said rod reciprocates through the upper part of frame a. also with the two press-plate rods J, reciprocate through the said frame a. The two sup ports on in and their surface-plates n n for under side pressure, for the purpose of taking the leather crimp off the trin when through molds F F, are operated by the double screw-shaft O. The fulcrums S S of said arms are on the lower end of the guide-bar 1 The rubber rollers R R before mentioned revolve in the bearings R R, each roller having a small spur-wheel T keyed 011 the lower end of its shaft, each revolving in an opposite direction to the trix when coming down, and the driver of said wheels is a third spur-wheel T on the upper end of shaft U, and at the lower end of said shaft is a pulley U, driven by belt from the larger pulley V on the lower end of shaft V in bracket'bearings V which are bolted to the frame a.

It will be readily perceived by the drawin gs how motion is transmitted from one part of the machine to another. The first pinion bevel-wheel S and driver of the whole machine is keyed onto the end of the shaft of the two drive-belt pulleys 13 1-3. The said bevel-wheel S drives the bevel-wheel Efiwith The matrix-rod I, bolted The lower part,

cam on its face working in bearing a thus turning the crank K, the latter turning the spur-wheel a in bearing a, thus giving n10- t-ion to the small spur-wheel V", keyed to the upper end of shaft V, thence to the other component parts of the machine, as before described.

The present invention is an improvement upon the United States Letters Patent granted me the 24th day of August, 1886, No. 348,145, and I make no claim in this application to anything shown. in the said patent.

Having thus described my device and its advantages, what I claim as my invention, and desire to secure by Letters Patent, is

1. The combination of the frame a of the machine, the trix with its rod and longitudinal slotted bar E, bevel-wheel E with its cam J with and for reciprocating the double inress-plates J, substantially as described.

2. The combination of the sliding molds c, grooved bearings 0 secured to the rigid mold of the machine, the guide-bar c springs c, the double screw-shaft D, nuts D levers D, angle shaft D, with its wheels keyed onto the same, and all driven by the mechanism, substantially as herein described.

3. The combination, with the frame of the machine, of the rubber rollers and bearings, spur-wheels T and T, shaft U, with its pulley U, the large pulley V on shaft V, driven by the mechanism of the machine, as described.

4:. The combination, with the frame of the machine, of the matrix I, with its rod I, the longitudinal cross-bars L, spiral springs S, the crank K, and the guide bars 1 substantially driven as herein described.

5. The combination of the under side-pressure surface-plates N N, their arms M M, the double-screwed movement-shaft O, and the trix E, with its red E, and the bevel-wheel E all driven by the mechanism of the machine, as described.

, 6. The combination of the trix E, with its red E,the sliding molds c,with their springs C, the rigid molds F, bolted to the frame a and provided with the corrugated-metal plates II II, with rubber backings, the matrix I and its red I, the double press-plates J, with rods J, and the under-pressure surface-plates, all driven by themechani sm, as herein described and set forth.

Dated at Hamilton, this 5th day of March, A. D. 1888.

ROBERT MARSHALL.

Witnesses:

GEORGE JoNEs, J. Briers SMITH.

ITO 

